/*
 * Copyright @ 2018 - present 8x8, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

@file:JvmName("PacketUtils")

package org.jitsi.videobridge.util

import org.jitsi.rtp.extensions.unsigned.toPositiveInt

private val DTLS_RANGE = 20..63

// TODO(brian): move this to RTP, and have the Packet extension
// function leverage it
fun looksLikeDtls(buf: ByteArray, off: Int, len: Int): Boolean {
    if (len < 1) {
        return false
    }
    return buf[off].toPositiveInt() in DTLS_RANGE
}
